8405055 has 24 divisors (see below), whose sum is σ = 15427152. Its totient is φ = 4218624.

The previous prime is 8405029. The next prime is 8405063. The reversal of 8405055 is 5505048.

It is not a de Polignac number, because 8405055 - 2⁷ = 8404927 is a prime.

8405055 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4729 + ... + 6258.

It is an arithmetic number, because the mean of its divisors is an integer number (642798).

Almost surely, 2^8405055 is an apocalyptic number.

8405055 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

8405055 is a deficient number, since it is larger than the sum of its proper divisors (7022097).

8405055 is a wasteful number, since it uses less digits than its factorization.

8405055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11015 (or 11012 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The square root of 8405055 is about 2899.1472884281. The cubic root of 8405055 is about 203.3200400399.

The spelling of 8405055 in words is "eight million, four hundred five thousand, fifty-five".